User.shape: Person
Server.shape: Cloud

Proxy.shape: Hexagon

Api: "API Server" {  }
Web: "Web Server" {  }
Runner: "Model Runner" {  
	style.multiple: true
}
Train: "Model Trainer" {  
	style.multiple: true
}

database: "Database" {
	shape: cylinder
}

User->Proxy
Server->Proxy

Proxy->Api
Proxy->Web

Api->Database
Api->Runner
Api->Train